CLRC663 datasheet(18/177 Pages) NXP

18 / 177 page

NXP Semiconductors

CLRC663

High performance multi-protocol NFC frontend CLRC663 and CLRC663 plus

8.3.3.1 FeliCa framing and coding

Preamble (Hex.)

Sync (Hex.)

Len

n-Data

CRC

Table 10. FeliCa framing and coding

To enable the FeliCa communication a 6 byte preamble (00h, 00h, 00h, 00h, 00h, 00h) and 2 bytes sync bytes

(B2h, 4Dh) are sent to synchronize the receiver.

The following Len byte indicates the length of the sent data bytes plus the LEN byte itself.

The CRC calculation is done according to the FeliCa definitions with the MSB first.

To transmit data on the RF interface, the host controller has to send the Len- and data- bytes to the CLRC663's

FIFO-buffer. The preamble and the sync bytes are generated by the CLRC663 automatically and must not be

written to the FIFO by the host controller. The CLRC663 performs internally the CRC calculation and adds the

result to the data frame.

8.3.4 ISO/IEC15693 functionality

The physical parameters are described in the following table:

Transfer speed

Communication direction Signal type

fc / 8192 kbit/s

fc / 512 kbit/s

reader side

modulation

10 % to 30 % ASK or

100 % ASK

10 % to 30 % ASK 90 % to 100

% ASK

bit encoding

1/256

1/4

Reader to label (send data

from the CLRC663 to a

card)

data rate

1.66 kbit/s

26.48 kbit/s

Table 11. Communication overview for ISO/IEC 15693 reader/writer reader to label

Transfer speed

Communication

direction

Signal type

6.62 (6.67) kbit/s

13.24 kbit/s[1]

26.48

(26.69) kbit/s

52.96 kbit/s

card side

modulation

not supported

single (dual)

subcarrier load

modulation

ASK

single subcarrier

load modulation

ASK

bit length (μs)

37.76 (37.46)

18.88

Label to reader

(CLRC663 receives

data from a card)

fc = 13.56 MHz

bit encoding

Manchester

coding

Manchester

coding

subcarrier

frequency

[MHz]

fc / 32 (fc / 28)

fc / 32

Table 12. Communication overview for ISO/IEC 15693 reader/writer label to reader

[1]

Fast inventory (page) read command only (ICODE proprietary command).

CLRC663

All information provided in this document is subject to legal disclaimers.

Product data sheet

Rev. 5.3 — 3 January 2024

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